Rheological characteristic of cement clean paste and flowing behavior of fresh mixing concrete with pumping in pipeline

  • Deng Shou-chang  (邓寿昌)Email author
  • Zhang Xue-bing  (张学兵)
  • Qin Ying-hui  (覃银辉)
  • Luo Guan-xiang  (罗冠祥)


The circumstance of fluid of fresh mixing concrete is analogous to Bingham fluid with pumping pressure in pipeline. The rheological characteristic of fresh mixing concrete along the pipeline wall in the action of push force with high pressure pumping is analysed. The results show that under the action of the concrete for pumping as long as the shear stress τ >τ0 at the position of pipeline wall, the fresh mixing concrete begins to flow, but in an arbitrary radius, the flowing stops before the concrete for pumping to take place. The pull force of concrete for pumping produced by the shear stress is greater than cement paste’s (or cement sand paste) yield stress τ0, the flowing may take place, therefore τ > τ0, it is advantaged to the fresh mixing concrete for pumping.

Key words

fresh mixing concrete cement clean spate rheological characteristic Newton liquid Bingham liquid 


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Copyright information

© Central South University Press, Sole distributor outside Mainland China: Springer 2007

Authors and Affiliations

  • Deng Shou-chang  (邓寿昌)
    • 1
    Email author
  • Zhang Xue-bing  (张学兵)
    • 2
  • Qin Ying-hui  (覃银辉)
    • 1
  • Luo Guan-xiang  (罗冠祥)
    • 1
  1. 1.School of Civil Engineering and Architecture and MechanicsCentral South University of Forestry and TechnologyChangshaChina
  2. 2.College of Civil Engineering and MechanicsXiangtan UniversityXiangtanChina

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